Factory making China Pvpp CAS 25249-54-1
Factory making China Pvpp CAS 25249-54-1 Detail:
Crospovidone is a crosslinked PVP,insoluble PVP,it is hygroscopic,insoluble in water and all other common solvents,but it swells rapidly in aqueous solutbition without any gel froms.Its; classified as Crospovidone Type A and Type B according to the different particle size.
Key Technical Parameters:
| Product | Crospovidone Type A | Crospovidone Type B |
| Appearance | White or yellowish-white powder or flakes | |
| Identifications | A.Infrared Absorption | |
| B.No blue color develops. | ||
| C.A Suspension is formed and no clear solution is obtained within 15 min. | ||
| D.Majority of particles are in the range 50 ~300 μm is type A,majority of particles are in the range 5~50 μm | ||
| Solubility | Practically insoluble in water,in alcohol and in methylene chloride | |
| Water- soluble substances | 1.0% max | 1.0% max |
| pH((1% in water) | 5.0 –8.0 | 5.0 –8.0 |
| Loss on Drying | 5.0% max. | 5.0% max. |
| Sulphated Ash | 0.1% max. | 0.1% max. |
| Nitrogen content | 11.0 -12.8 % | 11.0 -12.8 % |
| Impurity A | 10 ppm max. | 10 ppm max. |
| Peroxide(As H2O2) | 400 ppm max. | 1000 ppm max. |
| Heavy Metals | 10 ppm max. | 10 ppm max. |
Applications:
Crospovidone are widely used as 1)Disintergrating agent,2)Stabilizer for suspension,3)Moisture Absorbent, 4)Complextant of Polyphenols and Tannin for the extract formulations.
Product detail pictures:
Related Product Guide:
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